JP5564203B2 - Packaging box with opening maintenance function - Google Patents

Description

  The present invention relates to a packaging box with an opening maintaining function for cutting and opening a breaking line for opening provided on a side surface.

  2. Description of the Related Art Conventionally, some packaging boxes containing products are assembled with box-forming pieces that are integrally punched from a blank sheet made of paper or synthetic resin. Such a packaging box is integrally provided with four side surfaces that are connected to each other and assembled into a cylindrical shape, a lid piece that closes the upper opening, and a bottom surface that closes the lower opening. In addition, there is a product in which an opening break line is provided on the side surface or lid surface of such a packaging box, an opening is formed by cutting the opening break line, and the product accommodated from the opening Can be easily taken out. In addition, there is also a type in which a part of the breaking line for opening is left uncut and a part of the cut packaging box is connected to the edge of the opening as a lid. However, if the lid is not pressed by hand, it is closed by the elasticity of the blank sheet, and it is difficult to take out the product in the packaging box.

  In addition, there are some that lock the lid, which is a part of the cut packaging box, in an open state. For example, an upper cover carton with an opening maintaining function shown in Patent Document 1 is provided with an opening for taking out in a part of the top plate of the carton or straddling the top plate and the front plate connected to the top plate. An upper lid is connected to the rear outer plate, and the upper lid closes the opening. A horizontal fold line portion having a horizontal fold line serving as a rotation axis of the upper lid portion at the boundary between the rear outer plate and the upper lid portion is provided to extend over a part of the rear outer plate and the upper lid portion instead of the horizontal fold line portion. There is provided a hinge portion formed by a vertical notch of the set and a horizontal fold line provided by shifting the distance between the two vertical cuts of the set from the horizontal fold line portion closer to the upper lid portion. The operation of the upper cover piece of the upper cover carton with the opening maintaining function has an effect that the lower part of the hinge part is stretched against the opening / closing operation of the upper cover part that moves with the horizontal folding line as the rotation stop shaft, and it becomes an obstacle. On the other hand, in a state where the upper lid portion is further opened rearward by about 120 to 140 degrees from a right angle, the upper lid portion is maintained open even when the hand is released due to the locking movement of the hinge portion. It is not necessary to hold the upper lid by hand when taking out the contents.

  Some packaging boxes are provided with opening break lines on the side surfaces. Of the four side surfaces connected in parallel to each other and assembled into a cylindrical shape, one opening break line continuous in the connecting direction is formed on the three side surfaces, and the bottom side portion cut by the opening break line is The upper part becomes a cover part, and the cover part is connected on one side surface, and a lid part folding curve continuous to the breaking line for opening is provided on this side surface, and the lid part folding curve is bent. The lid opens.

JP 2000-159223 A

  In the case of Patent Document 1 of the background art described above, the hinge portion of the upper lid portion is provided at the boundary between the rear outer plate and the upper lid portion that is bent substantially at a right angle. On the other hand, none of the packaging boxes provided with opening break lines in the three side surfaces have a function of maintaining the opening of the lid.

  In general, in the case where the opening break lines are provided on the three side surfaces, the upper part of the side opening breaking line is continuous with the lid piece, and the lid portion is provided on one side surface. Since the lid folding curve is used as the rotation axis, the side surface must be bent along the lid folding curve when the lid is opened. However, when the side surface is bent, a restoring force is applied to the side surface to apply a force in the closing direction, and it is difficult to maintain the open state of the lid portion, which is inconvenient because the lid portion is easily closed.

  The present invention has been made in view of the above-mentioned problems of the background art, and is provided with a breaking line for opening on the side surface and easy to open, and a part of the side surface divided by the breaking line for opening is continuous. An object of the present invention is to provide a packaging box with an unsealing function capable of maintaining the lid portion to be opened reliably.

The present invention consists of a box-forming piece integrally punched from one blank sheet, and this box-forming piece has side faces connected in parallel to each other, and a glued piece for gluing the side faces together, An inner upper lid piece that closes the opening of the side surface that is connected to the upper end portion of the one side surface via a crease line and is assembled into a cylindrical shape, and is folded at the upper end portion of the side surface that faces the side surface provided with the inner upper lid piece. An outer upper lid piece that is connected via a ruled line and is superposed on the surface of the inner upper lid piece and glued to a portion other than the folded ruled lines to form an upper surface in an assembled state of the box, and the inner upper lid piece is provided Provided along the connecting direction of the side surface on the side surface provided with the breaking line for opening formed on the three side surfaces other than the side surface along the connecting direction of the side surface and the inner upper cover piece Continuous with the breaking line for opening That the lid folding curve is a box packaging with to have an opening function provided. In the middle of the crease line on the side surface to which the inner upper lid piece is connected, a pair of cutting lines intersecting the crease line at a substantially right angle is provided, and one end portion of the cutting line is the lid on the side surface. A part folding curve is reached, the other end reaches a predetermined position on the inner side of the inner upper lid piece , and a hinge part is formed between the pair of cutting lines, and the hinge part includes the lid part folding curve and the inner side. a first folding line located between said folding borders of the upper lid piece, the second folding line provided on the end portion located on the middle side of the inner upper lid piece of the pair of cutting lines are provided, the box body In the assembled state, the first folding curve and the second folding curve are not folded, only the crease line of the inner upper cover piece is normally folded at 90 °, and the breaking line for breaking is broken to break the breaking line for opening. wherein in the state in which opening the lid outer Ru is formed in the upper lid piece side, the first bending than Wherein said inner lid piece folded borders are folded Conversely, the second folding line is positive folding, the hinge portion on the inside of the box between the inner upper lid piece and the side that is connected from the outer upper lid piece and It will be in the state which protruded so that it might bend, and the opening of the said cover part is maintained.

  Moreover, the said cover part is provided with the inner side upper cover piece in which the said hinge part was provided, and the outer side upper cover piece overlapped and glued on the surface of the said inner side upper cover piece.

  The opening breaking line and the hinge portion are located on the upper lid side from the center portion of the side surface, and the opening of the lid portion is defined by the first folding line and the crease line between the side surface and the upper lid piece. To maintain.

  The packaging box with an opening maintaining function according to the present invention is provided with a breaking line for opening on the side surface and is easy to open, and the hinge portion of the lid portion is located inside the box body between the side surface and the lid piece. It protrudes so that it may bend and it will be in the state of a support | pillar, and the opening of the said cover part can be maintained reliably. Thereby, since the opening of the lid is maintained even if the hand is released, the object to be accommodated can be easily taken out.

It is a perspective view which shows the opening state of the packaging box with an opening function of one Embodiment of this invention. It is a perspective view which shows the state which opened the packaging box with an opening function of this embodiment. It is a perspective view which shows the state before opening of the packaging box with an opening function of this embodiment. It is an expanded view of the packaging box with an opening function of this embodiment. It is a front view which shows the folded state of the packaging box with an opening function of this embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 to 4 show an embodiment of the present invention. A packaging box 10 with an opening function according to this embodiment is a box-forming piece 12 formed by punching out a single blank sheet such as paper. Are assembled into a predetermined shape.

  FIG. 4 is a development view of the box-forming piece 12 as viewed from the surface. The box-forming piece 12 is formed by connecting side surfaces 14, 16, 18, and 20 in parallel with each other. The side surfaces 14, 16, 18, and 20 have the same length in the connecting width direction, and the lengths in the connecting direction are substantially equal to each other when the side surfaces 14 and 18 are long, and the side surfaces 16 and 20 are short and approximately equal to each other. . Further, a glued piece 22 that is glued to the back surface of the side face 20 in the assembled state of the packaging box 10 with an opening function is provided on the side edge of the side face 14. The glued piece 22 and the side surfaces 14, 16, 18, and 20 are divided by crease lines 24, 26, 28, and 30, respectively.

  On the side surface 14, an inner upper lid piece 32 is provided at one end in a direction perpendicular to the connecting direction of the side surfaces, separated by a break line 34 that is a crease line that is easy to bend. An inner bottom cover piece 44 is provided at the end of the side surface 14 opposite to the break line 34 and separated by a crease line 46. The side surface 14 is provided with a lid folding curve 42 substantially parallel to the breaking line 34 at a position close to the breaking line 34. The lid folding line 42 is provided with a break line so as to be easily bent. In the vicinity of the center of the breaking line 34, a pair of cutting lines 36 that intersect the breaking line 34 at a substantially right angle are provided in parallel to the crease lines 24 and 26. One end 36 a of the pair of cutting lines 36 reaches the lid folding curve 42 of the side surface 14, and no lid folding curve 42 is provided between the pair of cutting lines 36. The other end 36b of the cutting line 36 reaches a position close to the breaking line 34 on the inner side of the inner upper lid piece 32, and each end 36a, 36b of the pair of cutting lines 36 is semicircular in a direction away from each other. It is curved.

  A portion between the pair of cutting lines 36 is a belt-like hinge portion 37. The hinge portion 37 is provided with a first folding line 38 positioned between the end portion 36 a and the breaking line 34. The first folding line 38 is substantially parallel to the breaking line 34 and is provided with overlapping breaking lines so as to be easily bent. A second fold line 40 that is substantially parallel to the break line 34 is formed on the end part 36b side of the hinge part 37, and the break line is provided so as to be easily folded.

  A trapezoidal flap 48 is provided at the end of the side surface 16 adjacent to the breaking line 34 of the side surface 14, separated by a crease line 50. A trapezoidal flap 52 is provided at the end of the side surface 16 opposite to the crease line 50 and separated by the crease line 54. Further, the side surface 16 is provided with an opening breaking line 56 continuous with the lid folding curve 42 of the side surface 14. The breaking line for opening 56 starts from a position continuous with the lid folding line 42 of the crease line 26, reaches the crease line 28, and the breaking line 56 for opening inclines in a direction away from the flap 48 as the crease line 28 is approached. Is provided.

  At the end of the side surface 18 adjacent to the crease line 50 on the side surface 16, a rectangular outer top cover piece 58 having substantially the same size as the inner upper cover piece 32 is provided by being separated by a crease line 60. A rectangular outer bottom cover piece 62 having substantially the same size as the inner bottom cover piece 44 is provided on the end of the side surface 18 opposite to the crease line 60, separated by a crease line 64. The side surface 18 is provided with an opening break line 66 that is continuous with the opening break line 56 of the side surface 16. The opening break line 66 starts from a position continuous with the opening break line 56 of the crease line 28 and reaches the crease line 30, and the opening break line 66 is provided substantially parallel to the crease line 60.

  A trapezoidal flap 68 is provided at an end of the side surface 20 adjacent to the crease line 60 on the side surface 18, separated by a crease line 70. A trapezoidal flap 72 is provided at the end of the side surface 20 opposite to the crease line 70 and separated by the crease line 74. Further, the side surface 20 is provided with an opening breaking line 76 that is continuous with the opening breaking line 66. The opening breaking line 76 starts from a position continuous with the opening breaking line 66 of the crease line 30 and reaches the side edge on the opposite side of the crease line 30. The opening breaking line 76 approaches the side edge, that is, the fold line breaks. The farther away from the ruled line 30, the closer to the crease line 70. That is, it is symmetrical with the breaking line 56 for opening.

  The gluing piece 22 is provided with an opening break line 78 continuous with the lid folding curve 42 of the side surface 14. The breaking line for opening 78 starts from a position continuous with the lid folding line 42 of the crease line 24, reaches the side edge on the opposite side to the crease line 24, and the breaking line 78 for opening gets closer to the side edge, that is, The further away from the crease line 24, the more inclined it is in the direction away from the inner upper lid piece 32.

  Next, an example of a method for assembling the packaging box 10 with an opening function according to this embodiment will be described. Here, FIG. 4 is a view of the surface of the box-forming piece 12 of the packaging box 10 with an opening function, and the folding method in which the surface of the box-forming piece 12 is convex and the back surface is convex. This folding method is called reverse folding.

  First, the crease line 26 is normally folded and the glue 80 is applied to the surface of the glued piece 22. Next, the crease line 30 is forward-folded, and the back surface of the side surface 20 is glued to the surface of the glued piece 22 with glue 80, resulting in the folded state shown in FIG. 5 and shipped in this state. Next, in a factory for storing and packaging products, the crease lines 24, 26, 28, and 30 are each normally folded at 90 ° to form a rectangular box. Next, paste 82 is applied to the surface of the inner bottom cover piece 44, the flaps 52, 72 are normally folded at 90 ° with the crease lines 54, 74, and then the inner bottom lid piece 44 is correctly aligned with the fold line 46 at 90 °. Further, the outer bottom lid piece 62 is forwardly folded at 90 ° along the crease line 64 and the back surface of the outer bottom lid piece 62 is glued to the surface of the inner bottom lid piece 44 by glue 82 to form the bottom. The product is put into the assembled box, glue 82 is applied to the surface of the inner upper cover piece 32, the flaps 48 and 68 are normally folded at 90 ° by the crease lines 50 and 70, and then the inner upper cover at the breaking line 34 The piece 32 is normally folded at 90 °, and the outer upper lid piece 58 is forwardly folded at 90 ° and glued at the crease line 60 to form an upper surface. The order of assembling the box forming pieces 12 may be other than this, and can be changed as appropriate.

  Next, the opening method of the packaging box 10 with an opening function of this embodiment is demonstrated. The lower side or the upper side of the opening break line 66 on the side surface 18 is pushed with a finger to deform the side surface 18 and cut the opening break line 66. When the upper edge of the cut opening breaking line 66 is moved upward with a finger, the opening breaking line 56, the opening breaking line 76, and the opening breaking line 78 are cut, and the side surfaces 16, 18, 20 and the glue are cut. The attachment piece 22 is divided and opened. The packaging box 10 with an opening function is divided, and the divided upper portions of the inner upper lid piece 32, the outer upper lid piece 58, and the side surfaces 16, 18, and 20 become the lid portion 84, and the lid portion folding curve 42 of the side surface 14 is obtained. Rotate and open as a rotation axis.

  When the lid 84 rotates about the lid folding curve 42 as the central axis, the hinge portion 37 surrounded by the pair of cutting lines 36 has no crease line in the portion adjacent to the lid folding curve 42, and the plate It becomes flat as it is, and resistance is generated. When the force is further opened by applying a force, as shown in FIG. 2, the side edges of the cutting line 36 are displaced and begin to open. At this time, the break line 34 of the hinge part 37 and the vicinity of the first folding line 38 from the outside When pushed in, as shown in FIG. 1, the hinge part 37 has the breaking line 34 and the first folding line 38 folded in reverse, the second folding line 40 is folded forward, and the lid part 84 is opened without resistance. In this state, the hinge portion 37 projects between the lid portion folding curve 42 of the side surface 14 and a position close to the breaking line 34 of the inner upper lid piece 32 so as to bend to the inside of the box, and is in a state like a support column. It becomes. Thereby, the cover part 84 is maintained in the open state. And the goods accommodated in the packaging box 10 with an opening function are taken out from the opening part opened widely.

  When closing the lid 84, the lid 84 is closed as it is. At this time, the hinge part 37 maintains the state which protruded inside the box, and hold | maintains the cover part 84 in the closed state. Moreover, when closing the cover part 84, the hinge part 37 may be pushed from an inner side and the breaking line 34 may be returned to a normal fold and closed.

  According to the packaging box 10 with the opening function of this embodiment, the lid 84 can be kept open with a simple structure, and the stored product can be easily taken out. Moreover, the breaking lines 56, 66, and 76 for opening are provided on the respective side surfaces 16, 18, and 20, and can be easily opened. The lid portion 84 is partly divided into the side surfaces 16, 18, 20, and tends to be closed by a restoring force of a continuous portion above the opening breaking lines 56, 66, 76 of the side surfaces 16, 18, 20. However, the hinge part 37 will be in a state like a support | pillar, and it can maintain an open state reliably. In the unopened state, there are no openings or irregularities, so the appearance of the finished product is not impaired and a clean appearance is obtained. Moreover, it is compact and convenient at the time of transportation, and damage can be suppressed because the box strength is maintained. A free design can be printed on the surface. Although the cutting line 36 intersects the break line 34 that is a corner of the packaging box 10 with an opening function, the outer top cover piece 58 is overlapped on the surface of the inner top cover piece 32 having the break line 34, so that the strength is increased. It is safe without dropping.

  The packaging box with an opening function according to the present invention is not limited to the above embodiment, and the shape of each member can be freely changed. The shape of the box can be changed according to the goods to be accommodated, and the structure of the bottom may be one-touch assembled.

10 Packaging Box with Opening Function 12 Box Forming Pieces 14, 16, 18, 20 Side 22 Glued Piece 32 Inner Upper Lid Piece 34 Break Line 36 Cut Line 38 First Fold Curve 40 Second Fold Curve 42 Lid Fold Curve 58 Outer upper lid piece 84 Lid

Claims (2)

It consists of a box-shaped piece integrally punched from one blank sheet, and this box-shaped piece has a side surface connected in parallel to each other, a glued piece for gluing the side surfaces, and the one side surface. An inner upper lid piece that closes the opening of the side surface that is connected to the upper end portion of the tube and is assembled into a cylindrical shape, and an upper end portion of the side surface that faces the side surface provided with the inner upper lid piece via the crease line. An outer upper lid piece that is connected and overlapped on the surface of the inner upper lid piece and glued to a portion other than each crease line to form an upper surface in an assembled state of the box, and other than the side surface provided with the inner upper lid piece An opening break line formed continuously on three side surfaces along the connecting direction of the side surfaces, and the side surface provided with the inner upper cover piece are provided along the connecting direction of the side surfaces for the opening. Lid fold that is continuous with break line In the middle of the crease line on the side surface where the inner upper cover piece is connected, a pair of cutting lines intersecting the crease line at a substantially right angle is provided, and one end portion of the cutting line is The side surface of the lid part fold line is reached, the other end part reaches a predetermined position on the inner side of the inner upper cover piece , and a hinge part is formed between the pair of cutting lines. a second folding line to a first folding line, provided at an end portion located on the middle side of the inner upper cover piece of the pair of cutting lines located between the folding line and the folding borders of the inner upper lid piece In the assembled state of the box body, the first fold curve and the second fold curve are not folded, and only the crease line of the inner upper lid piece is normally folded at 90 °, and the breaking line for opening is broken. in a state than the opening for the break line was opened lid the Ru is formed in the outer upper lid side The first fold line and the crease line of the inner upper cover piece are reversely folded, the second fold curve is normally folded, and the hinge portion is connected between the side surface connected to the outer upper cover piece and the inner upper cover piece. A packaging box with an opening function, wherein the packaging box is in a state of projecting so as to bend inside the box and maintaining the opening of the lid.   The opening breaking line and the hinge portion are located on the upper lid side from the center portion of the side surface, and the opening of the lid portion is defined by the first folding line and the crease line between the side surface and the upper lid piece. The packaging box with an opening function according to claim 1 to be maintained.

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